Loop over a collection with while
The while construct causes the block of code between its curly braces to be executed repeatedly until the boolean expression at the top becomes false.
In the previous lesson, you created the body of the pointsToBust function to calculate the specific number of points. In this exercise, you'll write a while loop that loops through five hands (one for each player in the game) and finds the number of points to bust for each. Writing this while loop instead of calling the pointsToBust function five times makes our program more concise and readable.
この演習はコースの一部です
Introduction to Scala
演習の手順
- Define a counter variable,
i. Set it equal to zero to start. - Using the counter variable
i, write awhileloop that proceeds through the loophands.lengthtimes. - Find and print the winning hand's value for the
ith hand. - Increment the counter variable.
実践的なインタラクティブ演習
このサンプルコードを完成させて、この演習に挑戦してみましょう。
// Define counter variable
// Create list with five hands of Twenty-One
var hands = List(16, 21, 8, 25, 4)
// Loop through hands
___ ___ {
// Find and print number of points to bust
println(___)
// Increment the counter variable
}